Problem on extending an extended class

Hi I have to use a scrolled list several times among my program so I create a class named ScrolledList that extends Jpanel and an inner class that extends ScrolledLIst. The problem shows up when I�m trying to add an item inside the inner class, the code pass compilation, it even enter the addItem() but its dont add item What I�m doing wrong(code example please)?

here is the class i use whenever i need this scrolled list:

what im doing wrong(code example please)? Thanks

[This message has been edited by Shay Gaghe (edited October 05, 2001).]